Crows come in different sizes. The American crow is said to measure about 18 inches in length. The most common raven is measured about 20 inches in length. A common crow weighs 12 to 50 ounces. Most crows have a distinct long tail with multi-colored bills. The crows also differ from one another regarding voices and sizes. They mostly prefer living in open areas. Some people enjoy crow meat as well.
1. Crows Have the Largest Brain-to-body Ratio of All the Bird Species
Largest brain to body ratio means the weight of brain and body. This roughly estimates the intelligence level of an animal. However, it can turn out to be accurate sometimes. This relationship between brain and body is very linear and interrelated. The brain to the body weight of crow is almost equal to that of great apes. The jet black plumage has the largest brain among all other birds. To your surprise, it is only slightly lower than humans. They are very intelligent and can count up to five numbers. These black birds easily recognize human faces and basic human language. They are also very famous for tool making and innovation.